Seasonal Variation of Terrestrial Water Storage in Yunnan Province Inferred from GPS Vertical Observations

被引：0
|
作者：
He S. [1 ,2 ]
Gu Y. [1 ]
Fan D. [1 ]
Zhao H. [1 ]
Zheng R. [3 ]
机构：
[1] Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu
[2] China Railway First Survey & Design Institute Group, Xi'an
[3] Northwest Electric Power Design Institute Co. Ltd. of China Power Engineering Consulting Group, Xi'an
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2018年 / 47卷 / 03期
基金：
中国国家自然科学基金;
关键词：
GPS; GRACE; Loading deformation; Terrestrial water storage;
D O I：
10.11947/j.AGCS.2018.20170255
中图分类号：
学科分类号：
摘要：
In response to the mass redistribution on the surface of the earth, crustal vertical displacements are deformed in solid elastic earth, which can be recorded by continuous GPS.With GPS vertical observations at 47 stations from crustal movement observation network of China (CMONOC) in and around Yunnan province, we explore the feasibility analysis of using the data to infer the variation of water storage.Simulation experiments are conducted by using GLDAS (global land data assimilation system) Noah hydrological model, whose annual amplitude is referred as real signals.We used the GLDAS annual amplitude to calculate the vertical displacements, and combined the displacements with random errors to constitute simulated vertical displacements.The simulated vertical displacements are then converted to variation of water storage, which is compared with the original GLDAS water storage.We performed 1000 simulated experiments to evaluate robustness of the method, and it is evident that the variation of water storage could be effectively obtained by means of the vertical observations at the 47 CMONOC stations.Therefore, we investigated the variation of water storage over a period from 2010 to 2014.Results inferred from GPS data show obvious spatial and temporal distribution: the seasonal water in the southwestern mountain is much larger than that in eastern plain; the water storage reaches the maximum in October (after summer) and the minimum in April (after winter); a rate of 20 mm/a in total water storage in Yunnan province is presented during 2010-2014.The comparison between GPS-inferred water storage and GRACE, GLDAS and TRMM results showed good consistency in spatial and temporal distribution, indicating that CMONNOC GPS stations could be used as independent measurement to estimate terrestrial water storage changes during the gap between GRACE and future GRACE Follow-on missions. © 2018, Surveying and Mapping Press. All right reserved.
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页码：332 / 340
页数：8
相关论文
共 26 条
  • [1] Li Q., Luo Z., Zhong B., Et al., Terrestrial Water Storage Changes of the 2010 Southwest China Drought Detected by GRACE Temporal Gravity Field, Chinese Journal of Geophysics, 56, 6, pp. 1843-1849, (2013)
  • [2] Chew C.C., Small E.E., Terrestrial Water Storage Response to the 2012 Drought Estimated from GPS Vertical Position Anomalies, Geophysical Research Letters, 41, 17, pp. 6145-6151, (2014)
  • [3] Tapley B.D., Bettadpur S., Watkins M., Et al., The Gravity Recovery and Climate Experiment: Mission Overview and Early Results, Geophysical Research Letters, 31, 9, (2004)
  • [4] Zhong M., Duan J., Xu H., Et al., Trend of China Land Water Storage Redistribution at Medi-and Large-spatial Scales in Recent Five Years by Satellite Gravity Observations, Chinese Science Bulletin, 54, 9, pp. 1290-1294, (2009)
  • [5] Lu F., You W., Fan D., Et al., Chinese Continental Water Storage and Ocean Water Mass Variations Analysis in Recent Ten Years Based on GEACE RL05 Data, Acta Geodaetica et Cartographica Sinica, 44, 2, pp. 160-167, (2015)
  • [6] Famiglietti J.S., Rodell M., Water in the Balance, Science, 340, 6138, pp. 1300-1301, (2013)
  • [7] Davis J.L., Elosegui P., Mitrovica J.X., Et al., Climate-driven Deformation of the Solid Earth from GRACE and GPS, Geophysical Research Letters, 31, 24, (2004)
  • [8] Nahmani S., Bock O., Bouin M.N., Et al., Hydrological Deformation Induced by the West African Monsoon: Comparison of GPS, GRACE and Loading Models, Journal of Geophysical Research: Solid Earth, 117, B5, (2012)
  • [9] Jiang W., Xia C., Li Z., Et al., Analysis of Environmental Loading Effects on Regional GPS Coordinate Time Series, Acta Geodaetica et Cartographica Sinica, 43, 12, pp. 1217-1223, (2014)
  • [10] Sheng C., Gan W., Liang S., Et al., Identification and Elimination of Non-tectonic Crustal Deformation Caused by Land Water from GPS Time Series in the Western Yunnan Province based on GRACE Observations, Chinese Journal of Geophysics, 57, 1, pp. 42-52, (2014)
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